Set Includes: 1/4 in F x 3/8 in M 3/8 in F x 1/4 in M 3/8 in F x 1/2 in M 1/2 in F x 3/8 in M 1/2 in F x 3/4 in M 3/4 in F x 1/2 in M 3/4 in F x 1 in M 1 in F x 3/4 in M Chrome vanadium steel CA Residents: Click Here for Prop 65 Warning